Home / 211,253.10-316,879.65-127,272.30

Finding the Fourth Proportional to 211,253.10, 316,879.65 and 127,272.30

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Solution

The fourth proportional to 211,253.10, 316,879.65 and 127,272.30 is: 190,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,253.10 : 316,879.65 = 127,272.30 : x
  2. Step 2: Convert to fraction form
    211,253.10/316,879.65 = 127,272.30/x
  3. Step 3: Cross multiply
    211,253.10x = 316,879.65 × 127,272.30
  4. Step 4: Simplify right side
    211,253.10x = 40,330,001,878.70
  5. Step 5: Solve for x
    x = 40,330,001,878.70/211,253.10
  6. Step 6: Final answer
    x = 190,908.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.